pit falls quiz Flashcards

1
Q

Shannon diversity is denoted by

A

H

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2
Q

scale of shannon diversity:

A

0 to infinity: where higher # indicates greater diversity

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3
Q

H=0 means

A

the community has 1 species

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4
Q

what is Shannon’s diversity index?

A

a way to measure the diversity of species in a community

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5
Q

the intermediate disturbance hypothesis (IDH) suggests that

A

local species diversity is maximized when ecological disturbance is neither too rare nor too frequent

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6
Q

at low levels of disturbance…

A

Strong organisms outcompete weaker ones, leading to the weaker ones dying out and the strong ones becoming the dominant species in the ecosystem.

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7
Q

at high levels of disturbance…

A

all species are at risk of extinction

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8
Q

examples of high levels of disturbance

A

frequent forest fires or deforestation

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9
Q

y axis

A

species diversity

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10
Q

x axis

A

frequency of disturbance

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11
Q

recessional species indicate

A

the stage of growth after a big disaster

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12
Q

what is Shannon’s diversity index?

A

a way to measure the diversity of species in a community

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12
Q

recessional species order (roughly)

A
  1. moss/lichen
  2. grass/shrubs
  3. alder trees (introduce nitrogen)
  4. trees
  5. DIVERSITY
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